Permanent magnet synchronous motor control system for railway vehicle traction and its advantages

In this paper, the authors report their results on a permanent magnet synchronous motor control system for railway vehicle traction applications. First, they show the details of the system structure, second how to design the automatic current regulator (ACR) system and its characteristics, third an example of application of their assumed system and finally they introduce test results and the advantages of their system from the viewpoint of vehicle traction.